Railway-traffic-controlling apparatus



Oct. 20, 1925. 1,558,050

H. M. RYDER RAILWAY TRAFFIC CONTROLLING APPARATUS Filed May 2, 1924INVENTOR Patented Oct. 20, 1925.

UNITED STATES PATENT OFFICE.

HARRY M. RYDER, 0'! FOREST HILLS BOROUGH, PENNSYLVANIA, ASSIGNOR TO THEUNION SWITCH & SIGNAL COMPANY, O TION OF PENNSYLVANIA.

l3 SWISSVALE, PENNSYLVANIA, A CORPORA- RAILWAY-TRAFFIC-CONTROLLINGAPPARATUS.

Application filed May 2,

To all whom it may concern.

Be it known that I, I-TARRY M. RYDER, a citizen of the United States,residing at Forest Hills Borough, in the county of Allegheny and Stateof Pennsylvania, have invented certain new and useful Improvements inRailway-Traffic-Controlling Apparatus, of which the following is aspecification.

My invention relates to railway traflic controlling apparatus, andparticularly to apparatus of the type comprising vehicle carriedgoverning means controlled by energy received from the trackway. Moreparticularly, my invention relates to the vehicle carried receivingapparatus through the medium of which energy is transferred from thetrackway to the governing apparatus on the vehicle.

I will describe one form of receiving apparatus embodying my invention,and will then point out the novel features thereof in claims.

The accompanying drawing is a view, partly diagrammatic, showing oneform of receiving apparatus embodying my invention.

Referring to this drawing, the reference character a designates thefront axle of a railway vehicle, such as a locomotive, which vehiclenormally moves in the direction indicated by the arrow over the trackrails 1 and 1.

The track rails are supplied with alternating current from some suitablesource such as an alternator G connected with the rails through acircuit controller 20. This circuit controller may be operated by anysuitable means and when closed allows current to flow through the railsfrom alternator G. It should be noted that this current flows down onerail, through axle a, and back through the other rail. The currents inthe two rails 1 and 1 therefore flow in opposite directions at any giveninstant.

The reference character B designates the receiving apparatus in general.This apparatus comprises a plurality of magnetizable cores. Certain ofthese cores A, A A and A are arranged in advance of the front axle aabove the track rail 1 and in inductive relation therewith. Theremaining 1924. Serial No. 710,520.

cores A A, A and A are arranged in advance of axle a above the trackrail 1 and in inductive relation therewith.

. Each of the cores A is provided with a winding of some conductivematerial such copper wire and here designated by the reference characterD with a suitable distinguishing exponent. v

A condenser 12 is connected across the terminals of windings D and D forthe purpose of tuning these windings to approximate resonance at thefrequency of alternator G. For a similar purpose a condenser 13 isconnected across windings D and D*, a condenser 14 is connected acrosswindings D and D, and a condenser 15 is connected across windings D andD It will thus be clear that the receiving apparatus may be consideredas consisting of a plurality of receiving elements each including twowindings D tuned by a condenser.

It will be obvious from the drawing that the various parts may be soconnected that the voltages produced in all the receiving elements byalternating currents flowing in opposite directions in the two trackrails at any instant are additive.

The terminals 10 and 11 of the receiving apparatus are connected with arelay C, and the voltage induced in the receiving apparatus is thereforeavailable to energize relay C when alternating current is supplied tothe track rails. The relay C may control suitable train-governing meansin any desired manner.

One advantage possessed by receiving apparatus embodying my inventionover the usual type of receiving apparatus is a very marked improvementin efiiciency since the construction here disclosed permits of aconsiderably greater number of turns for each winding D than is possiblewith the ordinary construction.

Although I have herein shown and described only one form and arrangementof receiving apparatus embodying my invention, it is understood thatvarious changes and modifications may be made therein within the scopeof the appended claims without departing from the spirit and scope of myinvention.

- Having thus described my invention, what I claim is:

1. Vehicle carried receiving apparatus comprising a plurality ofreceiving elements 5 in inductive relation with the track rails, eachsuch element being tuned to approximate resonance at the same frequency,and all said elements being so connected that voltages induced in saidelements by alternating currents flowing in opposite directions in thetwo track rails are additive.

2. Vehicle carried receiving apparatus comprising a plurality ofreceiving elements each comprising at least one-winding in inductiverelation with the track rails, a condenser connected in parallel witheach said element, and all said elements being so connected thatvoltages induced in said elements by alternating currents flowing inopposite directions at any instant in the two track rails are additive.

Vehicle carried receiving apparatus comprising eight magnetizable coresin which two pairs are located in inductive relationwith each trackrail, a winding on each core, all said windings being so connected inseries that the voltages induced in said windings by alternating currentflowing in opposite directions in the two track rails at any instant areadditive, and four condensers one connected in parallel with thewindings on each pair of cores.

4. Vehicle carried receiving apparatus comprising a plurality ofreceiving elements located above each track rail and each elementcomprising at least one winding in inductive relation with the trackrail and tuned to approximate resonance at a given frequency, all saidelements being so connected that the voltages created in such elementsby alternating currents flowing in opposite directions in the two trackrails at an instant are additive.

Vehicle carried receiving apparatus comprising a plurality of receivingelements associated with each track and each comprising a winding ininductive relation with the corresponding track and a condenser incircuit with said winding, all said elements being so connected that thevoltages created in such elements by alternating currents flowing inopposite directions in the two track rails at an instant are additive.

In testimony whereof I afiix my signature.

HARRY M. RYDER.

Certificate of @orrection.

It is herehy certified that in Letters Patent No. 1,559.050, grantedOctober 97, 1925, upon the application of Oscar Daniel Srhvarlz. ofHudson. New York, for an improvement in Steering Mechanism for Vehicles,errors appear in the printed spuriliralirfii requiring correction asfollows; Page 1, lines 4.? and 4!), strike out the words of the reartruck same page, line-'50, after the word wheels and before the periodinsert the words of the rear f/ucf: at (m any 1e (Iifi'erent from theangle at whirh any of 7112 other wheels of the vehicle are set at anygiven time, same page, lines 78 to 81. trike outthe words at an angledifl'erent.fr0m the angle at whlch any of the other wheels of thevehicle are set at any given time page 4, lines 73 and 74, claim 7,strike out the words about their separate axes and insert the same tofollow after the word f wheels in line 75: and that the said LettersPatent should be read with these corrections therein that the same mayconform to the rerord of the case in the Patent Office.

This ertificatc supersedes Certificate of Correction issued December 15,1925.

Signed and sealed this 19th day of January, A4 l). 1926.

{SEALJ IN. A. KINNAN,

Acting ('ommz'ssioncr of Patents.

